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Mirrors > Home > MPE Home > Th. List > vsnid | Structured version Visualization version GIF version |
Description: A setvar variable is a member of its singleton. (Contributed by David A. Wheeler, 8-Dec-2018.) |
Ref | Expression |
---|---|
vsnid | ⊢ 𝑥 ∈ {𝑥} |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | vex 3450 | . 2 ⊢ 𝑥 ∈ V | |
2 | 1 | snid 4627 | 1 ⊢ 𝑥 ∈ {𝑥} |
Colors of variables: wff setvar class |
Syntax hints: ∈ wcel 2106 {csn 4591 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1913 ax-6 1971 ax-7 2011 ax-8 2108 ax-9 2116 ax-ext 2702 |
This theorem depends on definitions: df-bi 206 df-an 397 df-tru 1544 df-ex 1782 df-sb 2068 df-clab 2709 df-cleq 2723 df-clel 2809 df-v 3448 df-sn 4592 |
This theorem is referenced by: exsnrex 4646 rext 5410 unipw 5412 xpdifid 6125 opabiota 6929 fnressn 7109 fressnfv 7111 snnex 7697 frrlem12 8233 frrlem14 8235 wfrlem14OLD 8273 wfrlem16OLD 8275 mapsnd 8831 findcard2d 9117 ac6sfi 9238 iunfi 9291 elirrv 9541 kmlem2 10096 fin1a2lem10 10354 hsmexlem4 10374 iunfo 10484 modfsummodslem1 15688 lcmfunsnlem2lem1 16525 coprmprod 16548 coprmproddvdslem 16549 lbsextlem4 20681 frlmlbs 21240 coe1fzgsumdlem 21709 evl1gsumdlem 21759 maducoeval2 22026 dishaus 22770 dis2ndc 22848 dislly 22885 dissnlocfin 22917 comppfsc 22920 txdis 23020 txdis1cn 23023 txkgen 23040 isufil2 23296 alexsubALTlem4 23438 tmdgsum 23483 dscopn 23966 ovolfiniun 24902 volfiniun 24948 jensen 26375 uvtx01vtx 28408 cplgr1vlem 28440 unidifsnel 31526 gsumpart 31967 extdg1id 32439 irngss 32448 esum2dlem 32780 bnj1498 33762 funen1cnv 33781 cvmlift2lem1 33983 funpartlem 34603 topdifinffinlem 35891 fvineqsneq 35956 pibt2 35961 finixpnum 36136 mbfresfi 36197 pclfinN 38436 sn-iotalem 40714 mzpcompact2lem 41132 fourierdlem48 44515 sge0sup 44752 funressnvmo 45399 c0snmgmhm 46332 |
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